Stent repositioning and removal
First Claim
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1. A method for the repositioning or removal of a luminal stent, the method comprising:
- modifying a luminal stent prior to insertion in a tissue, by adding a tightening drawstring through one or both termini of the stent, wherein said drawstring is slack during normal use of the stent;
repositioning or removing said stent by the method of;
grasping said drawstring with a grasping element of a stent removal device;
withdrawing said grasping element into a protective sheath or over tube, thereby tightening said drawstring and decreasing the circumference of said stent;
withdrawing said stent at least partially into said protective sheath or over tube in order to reposition within said tissue or to remove from said tissue;
withdrawing said stent removal device.
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Abstract
A stent removal system. Surgical devices and methods are provided for a system that allows the repositioning or removal of luminal stents. A conventional stent is modified by the addition of a tightening drawstring with a loop or region for grasping. When the stent is inserted within the body, the drawstring is slack and does not constrict the stent. When the drawstring is tightened, for example by pulling on the region for grasping, the circumference of the stent at the terminus is decreased, allowing the stent to be repositioned or removed without trauma to the organ.
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Citations
18 Claims
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1. A method for the repositioning or removal of a luminal stent, the method comprising:
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modifying a luminal stent prior to insertion in a tissue, by adding a tightening drawstring through one or both termini of the stent, wherein said drawstring is slack during normal use of the stent;
repositioning or removing said stent by the method of;
grasping said drawstring with a grasping element of a stent removal device;
withdrawing said grasping element into a protective sheath or over tube, thereby tightening said drawstring and decreasing the circumference of said stent;
withdrawing said stent at least partially into said protective sheath or over tube in order to reposition within said tissue or to remove from said tissue;
withdrawing said stent removal device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A stent removal system, the system comprising:
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a luminal stent comprising a tightening drawstring through one or both termini of the stent, wherein said drawstring is slack during normal use of the stent;
a stent removal device, comprising a flexible elongate member with proximal and distal ends, a grasping member at the distal end, and a manual means for actuating the grasping member at the proximal end of the device. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification